Goliathus
Pachnoda
A small but interesting beetle that I occasionally find; a Bark-Gnawing Beetle, Temnoscheila spp. (family Trogossitidae) -
Many species of this genus are metallic green or blue. I was surprised at how readily these beetles will bite when handled, and at how much pressure their mandibles can exert, despite the insect being only around 20 mm long.
More info -
myrmecos.wordpress.com/2008/04/11/friday-beetle-blogging-temnoscheila-bark-gnawing-beetle/
bugguide.net/node/view/13599

Many species of this genus are metallic green or blue. I was surprised at how readily these beetles will bite when handled, and at how much pressure their mandibles can exert, despite the insect being only around 20 mm long.
More info -
myrmecos.wordpress.com/2008/04/11/friday-beetle-blogging-temnoscheila-bark-gnawing-beetle/
bugguide.net/node/view/13599